Indirect selection on cuticular hydrocarbon divergence in Drosophila melanogaster populations evolving under different operational sex ratios

2021 ◽  
Author(s):  
R. Dutta ◽  
T. S. Chechi ◽  
A. Yadav ◽  
N. G. Prasad
Keyword(s):  
Drosophila Melanogaster ◽  
Sex Ratios ◽  
Cuticular Hydrocarbon ◽  
Indirect Selection ◽  
Operational Sex Ratios

scholarly journals Cuticular Hydrocarbon Content that Affects Male Mate Preference of Drosophila melanogaster from West Africa

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Aya Takahashi ◽  
Nao Fujiwara-Tsujii ◽  
Ryohei Yamaoka ◽  
Masanobu Itoh ◽  
Mamiko Ozaki ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Low Frequency ◽  
Cuticular Hydrocarbon ◽  
Inhibitory Effect ◽  
Incipient Speciation ◽  
Transfer Experiment ◽  
Premating Isolation ◽  
Potential Factor ◽  
Male Mate ◽  
Different Strains

Intraspecific variation in mating signals and preferences can be a potential source of incipient speciation. Variable crossability between Drosophila melanogaster and D. simulans among different strains suggested the abundance of such variations. A particular focus on one combination of D. melanogaster strains, TW1(G23) and Mel6(G59), that showed different crossabilities to D. simulans, revealed that the mating between females from the former and males from the latter occurs at low frequency. The cuticular hydrocarbon transfer experiment indicated that cuticular hydrocarbons of TW1 females have an inhibitory effect on courtship by Mel6 males. A candidate component, a C25 diene, was inferred from the gas chromatography analyses. The intensity of male refusal of TW1 females was variable among different strains of D. melanogaster, which suggested the presence of variation in sensitivity to different chemicals on the cuticle. Such variation could be a potential factor for the establishment of premating isolation under some conditions.

scholarly journals Pleiotropic Effects of ebony and tan on Pigmentation and Cuticular Hydrocarbon Composition in Drosophila melanogaster

2019 ◽  
Vol 10 ◽  
Author(s):  
Jonathan H. Massey ◽  
Noriyoshi Akiyama ◽  
Tanja Bien ◽  
Klaus Dreisewerd ◽  
Patricia J. Wittkopp ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Cuticular Hydrocarbon ◽  
Hydrocarbon Composition ◽  
Pleiotropic Effects

Operational sex ratios and behavioural sex differences in a pipefish population

1994 ◽  
Vol 34 (6) ◽  
pp. 142-435 ◽  
Author(s):  
Amanda Vincent ◽  
Ingrid Ahnesj� ◽  
Anders Berglund
Keyword(s):  
Sex Differences ◽  
Sex Ratios ◽  
Operational Sex Ratios ◽  
Behavioural Sex Differences

Social Behavior and Operational Sex Ratios in the Viviparous Fish Girardinichthys multiradiatus

Copeia ◽  
1994 ◽  
Vol 1994 (4) ◽  
pp. 919 ◽  
Author(s):  
Constantino Macías Garcia ◽  
Constantino Macias Garcia
Keyword(s):  
Social Behavior ◽  
Sex Ratios ◽  
Viviparous Fish ◽  
Operational Sex Ratios

Reconstructed paternal genotypes reveal variable rates of multiple paternity at three rookeries of loggerhead sea turtles (Caretta caretta) in Western Australia

2014 ◽  
Vol 62 (6) ◽  
pp. 454 ◽  
Author(s):  
J. N. Tedeschi ◽  
N. J. Mitchell ◽  
O. Berry ◽  
S. Whiting ◽  
M. Meekan ◽  
...  
Keyword(s):  
Population Size ◽  
Western Australia ◽  
Sea Turtles ◽  
Sex Ratios ◽  
Multiple Paternity ◽  
Caretta Caretta ◽  
Loggerhead Sea Turtles ◽  
Female Population ◽  
Species Specific ◽  
Operational Sex Ratios

Female sea turtles are promiscuous, with clutches of eggs often sired by multiple males and rates of multiple paternity varying greatly within and across species. We investigated levels of multiple paternity in loggerhead sea turtles (Caretta caretta) from three rookeries in Western Australia by analysing polymorphic species-specific genetic markers. We predicted that the level of multiple paternity would be related to female population size and hence the large rookery at Dirk Hartog Island would have higher rates of multiple paternity than two smaller mainland rookeries at Gnaraloo Bay and Bungelup Beach. Contrary to our prediction, we found highly variable rates of multiple paternity among the rookeries that we sampled, which was unrelated to female population size (25% at Bungelup Beach, 86% at Gnaraloo Bay, and 36% at Dirk Hartog Island). Approximately 45 different males sired 25 clutches and the average number of sires per clutch ranged from 1.2 to 2.1, depending on the rookery sampled. The variance in rates of multiple paternity among rookeries suggests that operational sex ratios are variable in Western Australia. Periodic monitoring would show whether the observed patterns of multiple paternity for these three rookeries are stable over time, and our data provide a baseline for detecting shifts in operational sex ratios.

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